G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 33/22 (2006.01) G01N 33/00 (2006.01)
Patent
CA 2468734
A method is provided for the detection of a material comprising ammonium nitrate and a sugar, the method comprising sensing for the presence of hydrogen isocyanate (HNCO) and optionally nitrous oxide (N20). It is further provided an apparatus comprising heating means (22) in thermal communication with a sample holder (31) suitable for the containment of the material, the sample holder being in gaseous communication (12) with a sansing region (6), the apparatus being further provided with a means (9) for inducing flow of gas from the sample holder of the sensing region and a means (9) for sensing the presence of hydrogen isocyanate in the sensing region. In addition, a method is provided for the detection of a material comprising ammonium nitrate and a hydrocarbon, comprising sensing for the presence of nitrous oxide, carbon dioxide or a hydro carbon.
La présente invention concerne un procédé qui permettent de détecter une matière comprenant du nitrate d'ammonium et un sucre, lequel procédé consiste à détecter la présence d'isocyanate d'hydrogène (HNCO). L'invention concerne également un appareil apte à examiner une matière susceptible de comprendre du nitrate d'ammonium et un sucre, lequel appareil comprend des moyens de chauffage en communication thermique avec un porte-échantillon apte à contenir la matière, le porte-échantillon se trouvant en communication gazeuse avec une région de détection, l'appareil étant en outre équipé de moyens permettant d'induire un écoulement de gaz depuis le porte-échantillon vers la région de détection, et de moyens permettant de détecter la présence d'isocyanante d'hydrogène dans la région de détection.
Clark Terry
Shand Neil Charles
Thomas Andrew James
Webb Brian John
Fetherstonhaugh & Co.
The Secretary Of State For Defence
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